body{
    background-color: #222222;
    color: #fff;
}
.container{
    display: flex;
    flex-direction: row;
    flex-wrap:wrap;
}
.item{
    flex-grow: 1;
    margin: 35px 40px;
    text-align: center;
}
.item img{
    width: 75%;
}

.button{
    background-color:#7fb7e5;
    color: #ffffff;
    font-size: 20px;
    border-radius: 5px;
    padding: 10px;
    margin: 0 10px;
    border: none;
}
.header{
    height: 75px;
    overflow: hidden;
}
.header .logo{
    float: left;
    margin-top: 14px;
    height: 44px;
}
.header .nav{
    float: right;
  margin-top:20px;
}
.header .nav li{
    display: inline;
}
.header .nav li a{
    color: #fff;
    display: inline-block;
    padding-left: 10px;
    line-height: 33px;
    text-decoration: none;
    padding-right: 10px;
}
.header .nav li a:hover{
    font-weight: 700;
    background-color: black;
    border-radius: 32px;
    color: #fff;
    padding-right: 10px;
    
}


.footer{
    clear: both;
    margin-top: 22px;
    border-top: 1px solid #999;
    font-size: 12px;
    color: #999;
    padding: 10px 0;
    text-align: center;
}
